JP7012860B2 - Electric vehicle - Google Patents

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JP7012860B2
JP7012860B2 JP2020540080A JP2020540080A JP7012860B2 JP 7012860 B2 JP7012860 B2 JP 7012860B2 JP 2020540080 A JP2020540080 A JP 2020540080A JP 2020540080 A JP2020540080 A JP 2020540080A JP 7012860 B2 JP7012860 B2 JP 7012860B2
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battery case
case
battery
wall
electric vehicle
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JPWO2020044717A1 (en
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香苗 大熊
亮 北野
遼 藤井
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0433—Arrangement under the rear seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Description

本発明は、電動モータと、エンジンと、前記電動モータを駆動するバッテリモジュールを収容してフロアパネルの下面に配置されたバッテリケースと、前記エンジンから後方に延びるマフラーと、前記フロアパネルの上面に配置された前部シートおよび後部シートとを備える電動車両に関する。 In the present invention, an electric motor, an engine, a battery case accommodating a battery module for driving the electric motor and arranged on the lower surface of the floor panel, a muffler extending rearward from the engine, and an upper surface of the floor panel. It relates to an electric vehicle having an arranged front seat and a rear seat.

電動車両の後部シートの下方に配置されるバッテリパックが複数個のバッテリモジュールを備え、前側のバッテリモジュールを上下２段に配置し、後側のバッテリモジュールを１段に配置して後部シートのシートクッションの傾斜に沿わせることで、後部シートを可及的に低い位置に配置して乗員の頭上空間を確保するものが、下記特許文献１により公知である。 The battery pack located below the rear seat of the electric vehicle is equipped with multiple battery modules, the front battery module is arranged in two upper and lower stages, and the rear battery module is arranged in one stage to seat the rear seat. It is known from the following Patent Document 1 that the rear seat is arranged at a position as low as possible to secure an overhead space for an occupant by following the inclination of the cushion.

日本特許第６０８６６０４号公報Japanese Patent No. 6086604

ところで、電動モータおよびエンジンの両方を搭載した電動車両が、車体下面の車幅方向中央部に前後方向に配置された排気通路部材（排気管やマフラー）を備える場合、排気通路部材との干渉を回避しようとするとバッテリパックおよび後部シートの位置が高くなってしまい、後部シートの頭上空間の確保が難しくなる問題がある。 By the way, when an electric vehicle equipped with both an electric motor and an engine is provided with an exhaust passage member (exhaust pipe or muffler) arranged in the front-rear direction at the center of the lower surface of the vehicle body in the vehicle width direction, interference with the exhaust passage member is caused. If this is to be avoided, the positions of the battery pack and the rear seat will be high, and there is a problem that it will be difficult to secure an overhead space for the rear seat.

本発明は前述の事情に鑑みてなされたもので、排気通路部材の上方にバッテリパックおよび後部シートを配置する場合に、後部シートを可及的に低い位置に配置して頭上空間を確保することを目的とする。 The present invention has been made in view of the above circumstances, and when the battery pack and the rear seat are arranged above the exhaust passage member, the rear seat is arranged at the lowest possible position to secure an overhead space. With the goal.

上記目的を達成するために、本発明の第１の特徴によれば、電動モータと、エンジンと、前記電動モータを駆動するバッテリモジュールを収容してフロアパネルの下面に配置されたバッテリケースと、前記エンジンから後方に延びる排気通路部材と、前記フロアパネルの上面に配置された前部シートおよび後部シートとを備える電動車両であって、前記バッテリケースは、各々が別個のバッテリモジュール（３７，４５）を収容するように独立して形成された第１バッテリケースと第２バッテリケースとからなり、前記第２バッテリケースは前記第１バッテリケースよりも小型であって該第１バッテリケースの前上部に載置され、前記第２バッテリケースは前記後部シートのシートクッションの前部下方に配置され、前記第１バッテリケース（３１）のケース上壁（３４ａ）と前記第２バッテリケース（３２）のケース下壁（４２ａ）との間には、前記第２バッテリケース（３２）を該第２バッテリケース（３２）の外方から冷却する冷媒ジャケット（４７）が形成され、前記第１バッテリケースの車幅方向中央部の下面には前後方向に延びて前記排気通路部材の少なくとも一部が通過する凹部が形成され、前記第１バッテリケースに収容される前記バッテリモジュールは前記凹部の左右両側に配置され、前記第２バッテリケースに収容される前記バッテリモジュールは長手方向を車幅方向に向けて配置されることを特徴とする電動車両が提案される。In order to achieve the above object, according to the first feature of the present invention, an electric motor, an engine, a battery case accommodating a battery module for driving the electric motor and arranged on the lower surface of a floor panel, and a battery case. An electric vehicle comprising an exhaust passage member extending rearward from the engine and front and rear seats disposed on the top surface of the floor panel, each of the battery cases having a separate battery module (37, 45). ) Is independently formed as a first battery case and a second battery case, and the second battery case is smaller than the first battery case and is the front upper portion of the first battery case. The second battery case is placed below the front part of the seat cushion of the rear seat, and the case upper wall (34a) of the first battery case (31) and the second battery case (32). A refrigerant jacket (47) for cooling the second battery case (32) from the outside of the second battery case (32) is formed between the case lower wall (42a) and the first battery case. A recess extending in the front-rear direction and passing at least a part of the exhaust passage member is formed on the lower surface of the central portion in the vehicle width direction, and the battery modules housed in the first battery case are arranged on the left and right sides of the recess. An electric vehicle is proposed in which the battery module housed in the second battery case is arranged with the longitudinal direction facing the vehicle width direction.

また本発明の第２の特徴によれば、前記第１の特徴に加えて、バッテリ制御装置およびジャンクションボードの少なくとも一方を前記第１バッテリケースの後部における前記凹部の上方空間に配置し、セル電圧センサを前記第１バッテリケースの後部における前記バッテリモジュールの上方空間に配置したことを特徴とする電動車両が提案される。Further, according to the second feature of the present invention, in addition to the first feature, at least one of the battery control device and the junction board is arranged in the space above the recess in the rear part of the first battery case, and the cell voltage is provided. An electric vehicle is proposed in which the sensor is arranged in the space above the battery module at the rear of the first battery case.

また本発明の第３の特徴によれば、前記第２の特徴に加えて、前記第１バッテリケースの後部上面の車幅方向中央部の高さは、前記第２バッテリケースの上面の高さよりも低いことを特徴とする電動車両が提案される。Further, according to the third feature of the present invention, in addition to the second feature, the height of the central portion of the rear upper surface of the first battery case in the vehicle width direction is higher than the height of the upper surface of the second battery case. An electric vehicle characterized by being low is proposed.

また本発明の第４の特徴によれば、前記第１～前記第３の特徴の何れかに加えて、前記冷媒ジャケットは、前記第１バッテリケースのケース上壁下面と前記第２バッテリケースのケース下壁上面とにより区画されることを特徴とする電動車両が提案される。Further, according to the fourth feature of the present invention, in addition to any of the first to third features, the refrigerant jacket is the case upper wall lower surface of the first battery case and the second battery case. An electric vehicle characterized by being partitioned by an upper surface of a lower wall of a case is proposed.

また本発明の第５の特徴によれば、前記第１～前記第４の特徴の何れかに加えて、前記第２バッテリケースのケース後壁は前上方から後下方に向かって傾斜しており、前記第２バッテリケースの前部に配置した前記バッテリモジュールの後面と前記ケース後壁の前面との間に区画される空間に配線類を配置したことを特徴とする電動車両が提案される。Further, according to the fifth feature of the present invention, in addition to any of the first to fourth features, the case rear wall of the second battery case is inclined from the front upper part to the rear lower part. There is proposed an electric vehicle characterized in that wirings are arranged in a space partitioned between the rear surface of the battery module arranged in the front portion of the second battery case and the front surface of the rear wall of the case.

またの第６の特徴によれば、前記第１～前記第５の特徴の何れかに加えて、前記第１バッテリケースの上部および前記第２バッテリケースの後部の少なくとも一方は車幅方向に延びる梁部を備えることを特徴とする電動車両が提案される。Further, according to the sixth feature, in addition to any one of the first to fifth features, at least one of the upper portion of the first battery case and the rear portion of the second battery case extends in the vehicle width direction. An electric vehicle characterized by having a beam portion is proposed.

また本発明の第７の特徴によれば、前記第１～前記第６の特徴の何れかに加えて、前記第１バッテリケースは前記バッテリモジュールと前記電動車両の電気機器とを電気的に接続するコネクタを備え、前記コネクタは本体部とインターフェース部とを備え、前記インターフェース部は前記第１バッテリケースの前壁あるいは後壁であって、かつ車体前後方向に見て前記凹部の上方に配置されることを特徴とする電動車両が提案される。
Further, according to the seventh feature of the present invention, in addition to any of the first to sixth features, the first battery case electrically connects the battery module and the electric device of the electric vehicle. The connector includes a main body portion and an interface portion, and the interface portion is a front wall or a rear wall of the first battery case, and is arranged above the recess when viewed in the front-rear direction of the vehicle body. An electric vehicle characterized by this is proposed.

また本発明の第８の特徴によれば、前記第７の特徴に加えて、前記本体部は上面視で前記凹部の上方に配置されることを特徴とするが提案される。
Further, according to the eighth feature of the present invention, in addition to the seventh feature, it is proposed that the main body portion is arranged above the recess in a top view.

また本発明の第９の特徴によれば、前記第８の特徴に加えて、前記インターフェース部は前記第１バッテリケースの前壁に配置され、前記本体部は前記凹部の上方に配置されるジャンクションボードの前方に配置され、前記ジャンクションボードと前記本体部とは電気的に接続されることを特徴とする電動車両が提案される。
Further, according to the ninth feature of the present invention, in addition to the eighth feature, the interface portion is arranged on the front wall of the first battery case, and the main body portion is arranged above the recess. An electric vehicle is proposed, which is arranged in front of a board and is characterized in that the junction board and the main body portion are electrically connected to each other.

なお、実施の形態のマフラー１９は本発明の排気通路部材に対応し、実施の形態の第１バッテリケース３１および第２バッテリケース３２は本発明のバッテリケースに対応し、実施の形態の第２ウオータジャケット４７は本発明の冷媒ジャケットに対応し、実施の形態の低圧コネクタ５０および高圧コネクタ５１は本発明のコネクタに対応する。
The muffler 19 of the embodiment corresponds to the exhaust passage member of the present invention, and the first battery case 31 and the second battery case 32 of the embodiment correspond to the battery case of the present invention, and the second embodiment of the embodiment. The water jacket 47 corresponds to the refrigerant jacket of the present invention, and the low pressure connector 50 and the high pressure connector 51 of the embodiment correspond to the connector of the present invention.

本発明の第１の特徴によれば、電動車両は、電動モータと、エンジンと、電動モータを駆動するバッテリモジュールを収容してフロアパネルの下面に配置されたバッテリケースと、エンジンから後方に延びる排気通路部材と、フロアパネルの上面に配置された前部シートおよび後部シートとを備える。バッテリケースは、各々が別個のバッテリモジュールを収容するように独立して形成された第１バッテリケースと第２バッテリケースとからなり、第２バッテリケースは第１バッテリケースよりも小型であって該第１バッテリケースの前上部に載置され、第２バッテリケースは後部シートのシートクッションの前部下方に配置され、第１バッテリケースの車幅方向中央部の下面には前後方向に延びて排気通路部材の少なくとも一部が通過する凹部が形成され、第１バッテリケースに収容されるバッテリモジュールは凹部の左右両側に配置され、第２バッテリケースに収容されるバッテリモジュールは長手方向を車幅方向に向けて配置されるので、バッテリケースの容積を充分に確保しながら、かつバッテリケースとの干渉を回避しながら、後部シートを可及的に低い位置配置して乗員の頭上空間を確保することができる。また、第１バッテリケースのケース上壁と第２バッテリケースのケース下壁との間に、第２バッテリケースを該第２バッテリケースの外方から冷却する冷媒ジャケットを形成したので、第２バッテリケースのケース下壁を冷却してバッテリモジュールの冷却効果を高めることができる。According to the first feature of the present invention, the electric vehicle extends rearward from the electric motor, the engine, the battery case arranged on the lower surface of the floor panel accommodating the battery module for driving the electric motor, and the engine. It includes an exhaust passage member and front and rear seats arranged on the upper surface of the floor panel. The battery case consists of a first battery case and a second battery case, each of which is independently formed to accommodate a separate battery module, the second battery case being smaller than the first battery case. It is mounted on the front upper part of the first battery case, the second battery case is placed below the front part of the seat cushion of the rear seat, and the lower surface of the central part in the vehicle width direction of the first battery case extends in the front-rear direction and exhausts. A recess is formed through which at least a part of the passage member passes, the battery modules housed in the first battery case are arranged on the left and right sides of the recess, and the battery modules housed in the second battery case are longitudinally oriented in the vehicle width direction. The rear seats should be placed as low as possible to secure the overhead space for the occupants while ensuring sufficient volume of the battery case and avoiding interference with the battery case. Can be done. Further, since a refrigerant jacket for cooling the second battery case from the outside of the second battery case is formed between the upper wall of the case of the first battery case and the lower wall of the case of the second battery case, the second battery is formed. The lower wall of the case can be cooled to enhance the cooling effect of the battery module.

また本発明の第２の特徴によれば、バッテリ制御装置およびジャンクションボードの少なくとも一方を第１バッテリケースの後部における凹部の上方空間に配置し、セル電圧センサを第１バッテリケースの後部におけるバッテリモジュールの上方空間に配置したので、比較的に上下方向寸法が大きいバッテリ制御装置あるいはジャンクションボードをバッテリモジュールが存在しない凹部の上方空間に配置し、比較的に上下方向寸法が小さいセル電圧センサを高さがバッテリモジュールの上方空間に配置することで、第１バッテリケースの上面の高さを低く抑えることができる。
Further, according to the second feature of the present invention, at least one of the battery control device and the junction board is arranged in the space above the recess in the rear part of the first battery case, and the cell voltage sensor is placed in the battery module in the rear part of the first battery case. Since it is placed in the space above the battery, a battery controller or junction board with a relatively large vertical dimension is placed in the space above the recess where the battery module does not exist, and a cell voltage sensor with a relatively small vertical dimension is placed in height. By arranging the battery module in the space above the battery module, the height of the upper surface of the first battery case can be kept low.

また本発明の第３の特徴によれば、第１バッテリケースの後部上面の車幅方向中央部の高さは、第２バッテリケースの上面の高さよりも低いので、第１バッテリケースが後部シートと干渉し難くすることができる。
Further, according to the third feature of the present invention, the height of the central portion in the vehicle width direction of the rear upper surface of the first battery case is lower than the height of the upper surface of the second battery case, so that the first battery case is the rear seat. It can be made difficult to interfere with.

また本発明の第４の特徴によれば、冷媒ジャケットは、第１バッテリケースのケース上壁下面と第２バッテリケースのケース下壁上面とにより区画されるので、部品点数の増加を最小限に抑えながら冷媒ジャケットを形成することができ、しかも冷媒ジャケットの高さを最小限に抑えることができる。Further, according to the fourth feature of the present invention, the refrigerant jacket is partitioned by the lower surface of the upper wall of the case of the first battery case and the upper surface of the lower wall of the case of the second battery case, so that the increase in the number of parts is minimized. The refrigerant jacket can be formed while suppressing the pressure, and the height of the refrigerant jacket can be minimized.

また本発明の第５の特徴によれば、第２バッテリケースのケース後壁は前上方から後下方に向かって傾斜しており、第２バッテリケースの前部に配置したバッテリモジュールの後面とケース後壁の前面との間に区画される空間に配線類を配置したので、ケース後壁が後部シートと干渉するのを回避しながら第２バッテリケースの内部に空間を確保し、その空間を利用して配線類を配置することができる。Further, according to the fifth feature of the present invention, the case rear wall of the second battery case is inclined from the front upper part to the rear lower part, and the rear surface and the case of the battery module arranged in the front part of the second battery case. Since the wiring is placed in the space partitioned between the front of the rear wall and the front of the rear wall, a space is secured inside the second battery case while preventing the rear wall of the case from interfering with the rear seat, and that space is used. Wiring can be arranged.

また本発明の第６の特徴によれば、第１バッテリケースの上部および第２バッテリケースの後部の少なくとも一方は車幅方向に延びる梁部を備えるので、梁部でバッテリケースを補強して耐側面衝突性能を高めることができる。Further, according to the sixth feature of the present invention, since at least one of the upper portion of the first battery case and the rear portion of the second battery case has a beam portion extending in the vehicle width direction, the battery case is reinforced by the beam portion to withstand the resistance. Side collision performance can be improved.

また本発明の第７の特徴によれば、第１バッテリケースはバッテリモジュールと電動車両の電気機器とを電気的に接続するコネクタを備え、コネクタは本体部とインターフェース部とを備え、インターフェース部は第１バッテリケースの前壁あるいは後壁であって、かつ車体前後方向に見て凹部の上方に配置されるので、第１バッテリケースの前方あるいは後方に配置された電気機器に対する配線の取り回しを無駄なく行うことができる。Further, according to the seventh feature of the present invention, the first battery case is provided with a connector for electrically connecting the battery module and the electric device of the electric vehicle, the connector is provided with a main body portion and an interface portion, and the interface portion is provided. Since it is the front wall or the rear wall of the first battery case and is arranged above the recess when viewed in the front-rear direction of the vehicle body, it is wasteful to route the wiring to the electric equipment arranged in the front or the rear of the first battery case. Can be done without.

また本発明の第８の特徴によれば、本体部は上面視で凹部の上方に配置されるので、バッテリモジュールが配置されない凹部上方のデッドスペースを有効利用して本体部を合理的に配置することができる。
Further, according to the eighth feature of the present invention, since the main body portion is arranged above the recess in the top view, the main body portion is rationally arranged by effectively utilizing the dead space above the recess in which the battery module is not arranged. be able to.

また本発明の第９の特徴によれば、インターフェース部は第１バッテリケースの前壁に配置され、本体部は凹部の上方に配置されるジャンクションボードの前方に配置され、ジャンクションボードと本体部とは電気的に接続されるので、ジャンクションボードおよび本体部を接続するバスバーの長さを短く抑えることができる。Further, according to the ninth feature of the present invention, the interface portion is arranged on the front wall of the first battery case, the main body portion is arranged in front of the junction board arranged above the recess, and the junction board and the main body portion are arranged. Is electrically connected, so the length of the bus bar connecting the junction board and the main body can be kept short.

図１はプラグインハイブリッド車両の車体側面図である。（第１の実施の形態）FIG. 1 is a side view of the vehicle body of a plug-in hybrid vehicle. (First Embodiment) 図２はバッテリパックの分解斜視図である。（第１の実施の形態）FIG. 2 is an exploded perspective view of the battery pack. (First Embodiment) 図３は図１の３部拡大図である。（第１の実施の形態）FIG. 3 is a three-part enlarged view of FIG. (First Embodiment) 図４は図３の４－４線断面図である。（第１の実施の形態）FIG. 4 is a sectional view taken along line 4-4 of FIG. (First Embodiment) 図５は図２の５方向矢視図である。（第１の実施の形態）FIG. 5 is a five-direction arrow view of FIG. (First Embodiment) 図６は図２の６方向矢視図である。（第１の実施の形態）FIG. 6 is a 6-direction arrow view of FIG. (First Embodiment) 図７は第１ウオータジャケットおよび第２ウオータジャケットの配置を示す図である。（第１の実施の形態）FIG. 7 is a diagram showing the arrangement of the first water jacket and the second water jacket. (First Embodiment) 図８は第１バッテリケースの第１カバーを外した状態での斜視図である。（第２の実施の形態）FIG. 8 is a perspective view of the first battery case with the first cover removed. (Second embodiment)

１１ 電動モータ
１２ エンジン
１４ フロアパネル
１５ 前部シート
１６ 後部シート
１６ａ シートクッション
１９ マフラー（排気通路部材）
３１ 第１バッテリケース（バッテリケース）
３２ 第２バッテリケース（バッテリケース）
３３ａ 凹部
３３ｈ 前壁
３４ａ ケース上壁
３４ｆ 梁部
３７ バッテリモジュール
３９ ジャンクションボード
４０ バッテリ制御装置
４１ セル電圧センサ
４２ａ ケース下壁
４３ｃ ケース後壁
４３ｄ 梁部
４５ バッテリモジュール
４７ 第２ウオータジャケット（冷媒ジャケット）
４９ 配線類
５０ 低圧コネクタ（コネクタ）
５０ａ 本体部
５０ｂ インターフェース部
５１ 高圧コネクタ（コネクタ）
５１ａ インターフェース部11 Electric motor 12 Engine 14 Floor panel 15 Front seat 16 Rear seat 16a Seat cushion 19 Muffler (exhaust passage member)
31 First battery case (battery case)
32 Second battery case (battery case)
33a Recess 33h Front wall 34a Case upper wall 34f Beam 37 Battery module 39 Junction board 40 Battery control device 41 Cell voltage sensor 42a Case lower wall 43c Case rear wall 43d Beam 45 Battery module 47 Second water jacket (refrigerant jacket)
49 Wiring 50 Low voltage connector (connector)
50a Main body 50b Interface 51 High voltage connector (connector)
51a Interface section

以下、図１～図７に基づいて本発明の第１の実施の形態を説明する。なお、本明細書における前後方向、左右方向（車幅方向）および上下方向は運転席に着座した乗員を基準として定義される。 Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 7. In the present specification, the front-rear direction, the left-right direction (vehicle width direction), and the up-down direction are defined with reference to the occupant seated in the driver's seat.

第１の実施の形態First Embodiment

図１に示すように、前輪駆動のプラグインハイブリッド車両の車体前部には、前輪を駆動する電動モータ１１と、バッテリを充電する発電機を駆動するエンジン１２と、電動モータ１１の駆動を制御するインバータを備えるパワードライブユニット１３とが搭載される。フロアパネル１４の上面には前部シート１５および後部シート１６が配置されており、後部シート１６の下方のフロアパネル１４の下面に電動モータ１１に給電するバッテリパック１７が搭載される。エンジン１２から排気管１８が後方に延びており、排気管１８の中間部に設けられたマフラー１９がバッテリパック１７の下方に配置される。 As shown in FIG. 1, in the front part of the vehicle body of a plug-in hybrid vehicle driven by front wheels, the electric motor 11 for driving the front wheels, the engine 12 for driving the generator for charging the battery, and the drive of the electric motor 11 are controlled. A power drive unit 13 including an inverter is mounted. A front seat 15 and a rear seat 16 are arranged on the upper surface of the floor panel 14, and a battery pack 17 that supplies power to the electric motor 11 is mounted on the lower surface of the floor panel 14 below the rear seat 16. The exhaust pipe 18 extends rearward from the engine 12, and the muffler 19 provided in the middle portion of the exhaust pipe 18 is arranged below the battery pack 17.

図２に示すように、バッテリパック１７は、下段の第１バッテリケース３１と、第１バッテリケース３１の前上部に重ね合わされた上段の第２バッテリケース３２とを備える。第１バッテリケース３１は、何れも金属ダイキャスト製の第１ケース本体３３および第１カバー３４を備え、第１ケース本体３３の上面開口部に第１カバー３４を結合して構成される。第１ケース本体３３の車幅方向中央部には、半円状断面を有して前後方向に延びる溝状の凹部３３ａが上向きに窪むように形成されており、この凹部３３ａにマフラー１９（図１参照）の一部が収容される。 As shown in FIG. 2, the battery pack 17 includes a lower first battery case 31 and an upper second battery case 32 stacked on the front upper portion of the first battery case 31. The first battery case 31 includes a first case main body 33 and a first cover 34 made of metal die-cast, and is configured by connecting the first cover 34 to the upper surface opening of the first case main body 33. A groove-shaped recess 33a having a semicircular cross section and extending in the front-rear direction is formed in the central portion of the first case main body 33 in the vehicle width direction so as to be recessed upward, and a muffler 19 (FIG. 1) is formed in the recess 33a. See) part of it is housed.

図３～図５および図７に示すように、第１ケース本体３３は凹部３３ａにより左右に分断された左ケース底壁３３ｂおよび右ケース底壁３３ｃを備えており、左ケース底壁３３ｂの下面の左蓋部材３５Ａを結合することで、左ケース底壁３３ｂおよび左蓋部材３５Ａ間に左第１ウオータジャケット３６Ａが形成され、右ケース底壁３３ｃの下面の右蓋部材３５Ｂを結合することで、右ケース底壁３３ｃおよび右蓋部材３５Ｂ間に右第１ウオータジャケット３６Ｂが形成される。 As shown in FIGS. 3 to 5 and 7, the first case main body 33 includes a left case bottom wall 33b and a right case bottom wall 33c divided to the left and right by a recess 33a, and is provided with a lower surface of the left case bottom wall 33b. By connecting the left lid member 35A, the left first water jacket 36A is formed between the left case bottom wall 33b and the left lid member 35A, and by connecting the right lid member 35B on the lower surface of the right case bottom wall 33c. , The right first water jacket 36B is formed between the right case bottom wall 33c and the right lid member 35B.

左第１ウオータジャケット３６Ａの前端かつ車幅方向内端（右端）には、図示せぬ冷却水タンクから冷却水が供給される冷却水供給口３６ａが形成され、第１ケース本体３３の左ケース側壁３３ｄには左第１ウオータジャケット３６Ａの左端から排出された冷却水を第２バッテリケース３２に供給するための冷却水供給通路３３ｅが上向きに形成される。また右第１ウオータジャケット３６Ｂの前端かつ車幅方向内端（左端）には、図示せぬ冷却水タンクに冷却水を排出する冷却水排出口３６ｂが形成され、第１ケース本体３３の右ケース側壁３３ｆには第２バッテリケース３２から排出された冷却水を右第１ウオータジャケット３６Ｂの右端に供給するための冷却水排出通路３３ｇが下向きに形成される。 A cooling water supply port 36a to which cooling water is supplied from a cooling water tank (not shown) is formed at the front end and the inner end (right end) in the vehicle width direction of the left first water jacket 36A, and the left case of the first case body 33 is formed. On the side wall 33d, a cooling water supply passage 33e for supplying the cooling water discharged from the left end of the left first water jacket 36A to the second battery case 32 is formed upward. Further, at the front end of the right first water jacket 36B and the inner end (left end) in the vehicle width direction, a cooling water discharge port 36b for discharging cooling water to a cooling water tank (not shown) is formed, and the right case of the first case body 33 is formed. On the side wall 33f, a cooling water discharge passage 33g for supplying the cooling water discharged from the second battery case 32 to the right end of the right first water jacket 36B is formed downward.

図２に戻り、第１ケース本体３３の左ケース底壁３３ｂおよび右ケース底壁３３ｃの上面には、各２個のバッテリモジュール３７が載置される。直方体状のバッテリモジュール３７は複数のバッテリセル３８を長手方向に積層したもので、その長手方向（積層方向）が第１ケース本体３３の凹部３３ａの左右両側に沿うように前後方向に配置される。 Returning to FIG. 2, two battery modules 37 are mounted on the upper surfaces of the left case bottom wall 33b and the right case bottom wall 33c of the first case main body 33. The rectangular parallelepiped battery module 37 is a stack of a plurality of battery cells 38 in the longitudinal direction, and is arranged in the front-rear direction so that the longitudinal direction (stacking direction) is along the left and right sides of the recess 33a of the first case body 33. ..

第１ケース本体３３の凹部３３ａの後部上面には、ジャンクションボード３９およびバッテリ制御装置４０が配置され、それらジャンクションボード３９およびバッテリ制御装置４０の左右両側のバッテリモジュール３７の上面には、それぞれセル電圧センサ４１が配置される。 A junction board 39 and a battery control device 40 are arranged on the rear upper surface of the recess 33a of the first case main body 33, and cell voltages are respectively placed on the upper surfaces of the battery modules 37 on the left and right sides of the junction board 39 and the battery control device 40. The sensor 41 is arranged.

第１ケース本体３３の上面開口部を覆う第１カバー３４には後述する第２ウオータジャケット４７の底壁を構成するケース上壁３４ａが車幅方向に延びるように形成され、ケース上壁３４ａの車幅方向両端部には第１ケース本体３３の左右の冷却水供給通路３３ｅおよび冷却水排出通路３３ｇにそれぞれ連通する左右の連通孔３４ｂ，３４ｃが形成される。また第１カバー３４の後部における車幅方向中央部には、ジャンクションボード３９およびバッテリ制御装置４０の上方を覆う隆起部３４ｄが形成され、隆起部３４ｄの両側には左右のセル電圧センサ４１の上方をそれぞれ覆う隆起部３４ｅが形成される。さらに第１カバー３４の前後方向中央部には、台形状断面を有して上方に突出する梁部３４ｆが車幅方向に形成される。
The case upper wall 34a constituting the bottom wall of the second water jacket 47, which will be described later, is formed on the first cover 34 covering the upper surface opening of the first case main body 33 so as to extend in the vehicle width direction, and the case upper wall 34a. Left and right communication holes 34b and 34c communicating with the left and right cooling water supply passages 33e and the cooling water discharge passage 33g of the first case main body 33 are formed at both ends in the vehicle width direction. Further, a raised portion 34d covering the upper part of the junction board 39 and the battery control device 40 is formed in the central portion in the vehicle width direction at the rear portion of the first cover 34, and above the left and right cell voltage sensors 41 on both sides of the raised portion 34d. A raised portion 34e is formed to cover each of the above. Further, in the central portion of the first cover 34 in the front-rear direction, a beam portion 34f having a trapezoidal cross section and projecting upward is formed in the vehicle width direction.

第２バッテリケース３２は、何れも金属ダイキャスト製の第２ケース本体４２および第２カバー４３を備え、その内部にはバッテリセル４４を車幅方向に積層した左右２個のバッテリモジュール４５が配置され、各バッテリモジュール４５の上面にはセル電圧センサ４６が配置される。第２バッテリケース３２の第２ケース本体４２のケース下壁４２ａは上向きに窪む凹部４２ｂを備えており、この凹部４２ｂの下面と第１バッテリケース３１の第１カバー３４のケース上壁３４ａの上面との間に第２ウオータジャケット４７（図３、図４、図６および図７参照）が区画される。 The second battery case 32 includes a second case main body 42 and a second cover 43 made of metal die cast, and two left and right battery modules 45 in which battery cells 44 are laminated in the vehicle width direction are arranged inside the second case main body 42 and a second cover 43. A cell voltage sensor 46 is arranged on the upper surface of each battery module 45. The case lower wall 42a of the second case main body 42 of the second battery case 32 is provided with a recess 42b that is recessed upward, and the lower surface of the recess 42b and the case upper wall 34a of the first cover 34 of the first battery case 31. A second water jacket 47 (see FIGS. 3, 4, 6 and 7) is partitioned from the top surface.

図２および図３の拡大枠内に示すように、第２ウオータジャケット４７および左右の連通孔３４ｂ，３４ｃの外周は、第２ケース本体４２のケース下壁４２ａ下面および第１カバー３４のケース上壁３４ａの上面間に挟まれたシール部材４８でシールされる。そしてシール部材４８の外側において、第１カバー３４のケース上壁３４ａの上面は外側に向かって下り傾斜している。 As shown in the enlarged frames of FIGS. 2 and 3, the outer circumferences of the second water jacket 47 and the left and right communication holes 34b and 34c are on the lower surface of the case lower wall 42a of the second case body 42 and on the case of the first cover 34. It is sealed by a sealing member 48 sandwiched between the upper surfaces of the wall 34a. On the outside of the seal member 48, the upper surface of the case upper wall 34a of the first cover 34 is inclined downward toward the outside.

図３に示すように、第２カバー４３の前後方向断面は、ケース前壁４３ａ、ケース上壁４３ｂおよびケース後壁４３ｃを備えており、ケース後壁４３ｃは前上方から後下方に向かって傾斜する。第２バッテリケース３２に収容されたバッテリモジュール４５の後面とケース後壁４３ｃとの間には断面三角形状の空間が形成され、この空間に配線類４９が収容される。また第２カバー４３のケース後壁４３ｃの後端に沿って、上向きに開放するＵ字状断面の梁部４３ｄが車幅方向に形成される。 As shown in FIG. 3, the front-rear cross section of the second cover 43 includes a case front wall 43a, a case upper wall 43b, and a case rear wall 43c, and the case rear wall 43c is inclined from the front upper part to the rear lower part. do. A space having a triangular cross section is formed between the rear surface of the battery module 45 housed in the second battery case 32 and the case rear wall 43c, and the wirings 49 are housed in this space. Further, along the rear end of the case rear wall 43c of the second cover 43, a beam portion 43d having a U-shaped cross section that opens upward is formed in the vehicle width direction.

図１に示すように、上述のように構成されたバッテリパック１７は、後部シート１６の下方のフロアパネル１４の下面に搭載される。後部シート１６のシートクッション１６ａは前上がりに形成されており、シートクッション１６ａの前部がバッテリパック１７の第２バッテリケース３２の上方に配置され、シートクッション１６ａの後部がバッテリパック１７の第１バッテリケース３１の後部の上方に配置される。 As shown in FIG. 1, the battery pack 17 configured as described above is mounted on the lower surface of the floor panel 14 below the rear seat 16. The seat cushion 16a of the rear seat 16 is formed so as to rise forward, the front portion of the seat cushion 16a is arranged above the second battery case 32 of the battery pack 17, and the rear portion of the seat cushion 16a is the first of the battery pack 17. It is located above the rear of the battery case 31.

次に、上記構成を備えた本発明の実施の形態の作用を説明する。 Next, the operation of the embodiment of the present invention having the above configuration will be described.

車体前部に搭載したエンジン１２から後方に延びる排気管１８に設けられたマフラー１９は、下段の第１バッテリケース３１の第１ケース本体３３の左ケース底壁３３ｂおよび右ケース底壁３３ｃ間を前後方向に延びる凹部３３ａに収容されるため、マフラー１９との干渉を回避してバッテリパック１７を可及的に低い位置に配置することができ、これによりバッテリパック１７の上方に配置される後部シート１６を低い位置に配置して乗員の頭上空間を確保することができる。 The muffler 19 provided in the exhaust pipe 18 extending rearward from the engine 12 mounted on the front part of the vehicle body is between the left case bottom wall 33b and the right case bottom wall 33c of the first case main body 33 of the first battery case 31 in the lower stage. Since it is housed in the recess 33a extending in the front-rear direction, the battery pack 17 can be placed at the lowest possible position while avoiding interference with the muffler 19, whereby the rear part placed above the battery pack 17 can be placed. The seat 16 can be arranged at a low position to secure an overhead space for the occupant.

第１バッテリケース３１に収容される４個のバッテリモジュール３７は第１ケース本体３３の車幅方向中央部から上方に隆起する凹部３３ａの左右両側に沿うように長手方向を前後方向に向けて配置されるので、バッテリモジュール３７の搭載位置を低くして第１バッテリケース３１の第１カバー３４の高さを低く抑えることができる。一方、第２バッテリケース３２の２個のバッテリモジュール４５は第２ケース本体４２に長手方向を車幅方向に向けて配置されるので、第２バッテリケース３２の前後方向幅を小さくして第１バッテリケース３１の前部だけに重ね合わせることができる。その結果、バッテリパック１７の上面は前上がりの階段状になり、その前上がりの傾斜に沿わせて後部シート１６のシートクッション１６ａを配置することで、後部シート１６を更に低い位置に配置して乗員の頭上空間を確保することができる。 The four battery modules 37 housed in the first battery case 31 are arranged with their longitudinal directions oriented in the front-rear direction along the left and right sides of the recess 33a that rises upward from the center of the first case body 33 in the vehicle width direction. Therefore, the mounting position of the battery module 37 can be lowered to keep the height of the first cover 34 of the first battery case 31 low. On the other hand, since the two battery modules 45 of the second battery case 32 are arranged in the second case main body 42 with the longitudinal direction facing the vehicle width direction, the width in the front-rear direction of the second battery case 32 is reduced to the first. It can be overlapped only on the front part of the battery case 31. As a result, the upper surface of the battery pack 17 has a stepped shape that rises forward, and by arranging the seat cushion 16a of the rear seat 16 along the inclination of the front rising, the rear seat 16 is arranged at a lower position. It is possible to secure an overhead space for the occupants.

特に、バッテリパック１７のジャンクションボード３９およびバッテリ制御装置４０は第１バッテリケース３１の後部における凹部３３ａの上方空間を利用して配置され、セル電圧センサ４１は第１バッテリケース３１の後部におけるバッテリモジュール３７の上方空間を利用して配置されるので、比較的に上下方向寸法が大きいジャンクションボード３９およびバッテリ制御装置４０をバッテリモジュール３７が存在しない凹部３３ａの上方空間に位置させ、比較的に上下方向寸法が小さいセル電圧センサ４１をバッテリモジュール３７の上方空間に配置することで、第１バッテリケース３１の上面の高さを低く抑えることができる。 In particular, the junction board 39 and the battery control device 40 of the battery pack 17 are arranged by utilizing the space above the recess 33a in the rear part of the first battery case 31, and the cell voltage sensor 41 is a battery module in the rear part of the first battery case 31. Since it is arranged using the space above 37, the junction board 39 and the battery control device 40, which have relatively large vertical dimensions, are located in the space above the recess 33a where the battery module 37 does not exist, and are relatively vertical. By arranging the cell voltage sensor 41 having a small size in the space above the battery module 37, the height of the upper surface of the first battery case 31 can be kept low.

このように、ジャンクションボード３９、バッテリ制御装置４０およびセル電圧センサ４１を収容したことで、第１バッテリケース３１の後部上面の高さが若干高くなっても、その第１バッテリケース３１の後部上面の高さは、第２バッテリケース３２の上面の高さよりも低いので、第１バッテリケース３１が後部シート１６のシートクッション１６ａと干渉する虞はない。 By accommodating the junction board 39, the battery control device 40, and the cell voltage sensor 41 in this way, even if the height of the rear upper surface of the first battery case 31 is slightly increased, the rear upper surface of the first battery case 31 is accommodated. Since the height of the first battery case 32 is lower than the height of the upper surface of the second battery case 32, there is no possibility that the first battery case 31 interferes with the seat cushion 16a of the rear seat 16.

また第２バッテリケース３２の第２カバー４３のケース後壁４３ｃは前上方から後下方に向かって傾斜しており、第２バッテリケース３２の前部に配置したバッテリモジュール４５の後面とケース後壁４３ｃの前面との間に区画される空間に配線類４９を配置したので、ケース後壁４３ｃが後部シート１６のシートクッション１６ａと干渉するのを回避しながら第２バッテリケース３２の内部に空間を確保し、その空間を利用して配線類４９を配置することができる。 Further, the case rear wall 43c of the second cover 43 of the second battery case 32 is inclined from the front upper part to the rear lower part, and the rear surface and the case rear wall of the battery module 45 arranged in the front part of the second battery case 32. Since the wiring 49 is arranged in the space partitioned between the front surface of the 43c and the front surface of the 43c, the space inside the second battery case 32 is provided while preventing the rear wall 43c of the case from interfering with the seat cushion 16a of the rear seat 16. Wiring 49 can be arranged by securing and using the space.

さらに第１バッテリケース３１の第１カバー３４は車幅方向に延びる梁部３４ｆを備え、第２バッテリケース３２の第２カバー４３は車幅方向に延びる梁部４３ｄを備えるので、これらの梁部３４ｆ，４３ｄで第１バッテリケース３１および第２バッテリケース３２を補強して耐側面衝突性能を高めることができる。
Further, the first cover 34 of the first battery case 31 includes a beam portion 34f extending in the vehicle width direction, and the second cover 43 of the second battery case 32 includes a beam portion 43d extending in the vehicle width direction. The first battery case 31 and the second battery case 32 can be reinforced with 34f and 43d to improve the side collision resistance.

さて、低温の冷却水は冷却水供給口３６ａ→左第１ウオータジャケット３６Ａ→冷却水供給通路３３ｅ→第２ウオータジャケット４７→冷却水排出通路３３ｇ→右第１ウオータジャケット３６Ｂ→冷却水排出口３６ｂの経路を循環し、第１バッテリケース３１の底部に形成された左第１ウオータジャケット３６Ａおよび右第１ウオータジャケット３６Ｂで４個のバッテリモジュール３７を冷却し、第２バッテリケース３２の底部に形成された第２ウオータジャケット４７で２個のバッテリモジュール４５を冷却する。 The low-temperature cooling water is the cooling water supply port 36a → left first water jacket 36A → cooling water supply passage 33e → second water jacket 47 → cooling water discharge passage 33g → right first water jacket 36B → cooling water discharge port 36b. The four battery modules 37 are cooled by the left first water jacket 36A and the right first water jacket 36B formed at the bottom of the first battery case 31, and formed at the bottom of the second battery case 32. The two battery modules 45 are cooled by the second water jacket 47.

第１バッテリケース３１の第１ケース本体３３の底壁はマフラー１９を収容する凹部３３ａによって左ケース底壁３３ｂおよび右ケース底壁３３ｃに分離するため、第１ケース本体３３のウオータジャケットは左第１ウオータジャケット３６Ａおよび右第１ウオータジャケット３６Ｂに２分割され、また第２バッテリケース３２の第２ケース本体４２の下面には左第１ウオータジャケット３６Ａおよび右第１ウオータジャケット３６Ｂとは別個の第２ウオータジャケット４７が設けられる。 Since the bottom wall of the first case body 33 of the first battery case 31 is separated into the left case bottom wall 33b and the right case bottom wall 33c by the recess 33a accommodating the muffler 19, the water jacket of the first case body 33 is on the left. It is divided into 1 water jacket 36A and 1st right water jacket 36B, and on the lower surface of the 2nd case main body 42 of the 2nd battery case 32, the left 1st water jacket 36A and the right 1st water jacket 36B are separate from each other. 2 Water jacket 47 is provided.

このように、バッテリパック１７は上下かつ左右に分割された３個の左第１ウオータジャケット３６Ａ、右第１ウオータジャケット３６Ｂおよび第２ウオータジャケット４７を備えるが、それらを第１ケース本体３３の左ケース側壁３３ｄに設けた冷却水供給通路３３ｅおよび右ケース側壁３３ｆに設けた冷却水排出通路３３ｇで直列に接続したので、冷却水通路の長さを短縮して部品点数を最小限に抑えながら高い冷却性能を得ることができる。 As described above, the battery pack 17 includes three left first water jackets 36A, right first water jackets 36B, and second water jackets 47, which are vertically and horizontally divided, and these are left of the first case main body 33. Since the cooling water supply passage 33e provided on the case side wall 33d and the cooling water discharge passage 33g provided on the right case side wall 33f are connected in series, the length of the cooling water passage is shortened and the number of parts is minimized and high. Cooling performance can be obtained.

また左第１ウオータジャケット３６Ａの冷却水供給口３６ａおよび右第１ウオータジャケット３６Ｂの冷却水排出口３６ｂは共に第１バッテリケース３１の前面側に設けられるので、バッテリパック１７の前方に配置された冷却水タンクとバッテリパック１７とを接続する冷却水通路の長さを最小限に抑えることができる。しかも冷却水供給口３６ａおよび冷却水供給通路３３ｅは左第１ウオータジャケット３６Ａの車幅方向両端に設けられ、冷却水排出口３６ｂおよび冷却水排出通路３３ｇは右第１ウオータジャケット３６Ｂの車幅方向両端に設けられ、かつ冷却水供給通路３３ｅおよび冷却水排出通路３３ｇは第２ウオータジャケット４７の車幅方向両端に設けられるので、冷却水通路の取り回しを簡素化しながら、左第１ウオータジャケット３６Ａ、右第１ウオータジャケット３６Ｂおよび第２ウオータジャケット４７の内部空間に冷却水を均等に流通させて冷却性能を高めることができる。 Further, since the cooling water supply port 36a of the left first water jacket 36A and the cooling water discharge port 36b of the right first water jacket 36B are both provided on the front side of the first battery case 31, they are arranged in front of the battery pack 17. The length of the cooling water passage connecting the cooling water tank and the battery pack 17 can be minimized. Moreover, the cooling water supply port 36a and the cooling water supply passage 33e are provided at both ends of the left first water jacket 36A in the vehicle width direction, and the cooling water discharge port 36b and the cooling water discharge passage 33g are provided in the vehicle width direction of the right first water jacket 36B. Since the cooling water supply passage 33e and the cooling water discharge passage 33g are provided at both ends and are provided at both ends in the vehicle width direction of the second water jacket 47, the left first water jacket 36A, while simplifying the handling of the cooling water passage, Cooling water can be evenly distributed in the internal spaces of the right first water jacket 36B and the second water jacket 47 to improve the cooling performance.

特に、第２バッテリケース３２の第２ケース本体４２のケース下壁４２ａには上向きに窪む凹部４２ｂが形成され、凹部４２ｂの上面にバッテリモジュール４５が載置され、凹部４２ｂの下面と、そこに結合された第１バッテリケース３１の第１カバー３４のケース上壁３４ａの上面との間に第２ウオータジャケット４７が形成されるので、特別の部材を追加することなく、既存の第１バッテリケース３１のケース上壁３４ａおよび第２バッテリケース３２のケース下壁４２ａをそのまま利用して第２ウオータジャケット４７を構成することができる。しかも第２ウオータジャケット４７は第１バッテリケース３１および第２バッテリケース３２の外部に区画されるので、万一第２ウオータジャケット４７から冷却水が漏れた場合であっても、その冷却水が第１バッテリケース３１あるいは第２バッテリケース３２の内部に浸入する虞がない。 In particular, a recess 42b that is recessed upward is formed in the case lower wall 42a of the second case body 42 of the second battery case 32, and the battery module 45 is placed on the upper surface of the recess 42b, and the lower surface of the recess 42b and the lower surface thereof. Since the second water jacket 47 is formed between the upper surface of the case upper wall 34a of the first cover 34 of the first battery case 31 coupled to the above, the existing first battery without adding any special member. The second water jacket 47 can be configured by using the case upper wall 34a of the case 31 and the case lower wall 42a of the second battery case 32 as they are. Moreover, since the second water jacket 47 is partitioned outside the first battery case 31 and the second battery case 32, even if the cooling water leaks from the second water jacket 47, the cooling water is the first. 1 There is no risk of intrusion into the inside of the battery case 31 or the second battery case 32.

また第１バッテリケース３１の左ケース側壁３３ｄに左第１ウオータジャケット３６Ａおよび第２ウオータジャケット４７を接続する冷却水供給通路３３ｅを形成し、第１バッテリケース３１の右ケース側壁３３ｆに右第１ウオータジャケット３６Ｂおよび第２ウオータジャケット４７を接続する冷却水排出通路３３ｇを形成したので、外部配管のような特別の部材が不要になって部品点数が削減されるだけでなく、第２ウオータジャケット４７、連通孔３４ｂおよび連通孔３４ｂを共通のシール部材４８で取り囲むことで部品点数が更に削減される。しかも第２ウオータジャケット４７外周を区画するシール部材４８の外側で、第１バッテリケース３１の第１カバー３４のケース上壁３４ａは外側に向かって下向きに傾斜するので（図３参照）、万一シール部材４８から冷却水が漏れた場合であっても、漏れた冷却水が第１カバー３４のケース上壁３４ａの上面に溜まることが防止される。 Further, a cooling water supply passage 33e for connecting the left first water jacket 36A and the second water jacket 47 is formed on the left case side wall 33d of the first battery case 31, and the right first side wall 33f of the first battery case 31 is formed. Since the cooling water discharge passage 33g connecting the water jacket 36B and the second water jacket 47 is formed, not only the number of parts is reduced by eliminating the need for special members such as external piping, but also the second water jacket 47 is formed. By surrounding the communication hole 34b and the communication hole 34b with a common sealing member 48, the number of parts is further reduced. Moreover, since the case upper wall 34a of the first cover 34 of the first battery case 31 is inclined downward toward the outside on the outside of the seal member 48 that divides the outer periphery of the second water jacket 47 (see FIG. 3), by any chance. Even if the cooling water leaks from the seal member 48, the leaked cooling water is prevented from accumulating on the upper surface of the case upper wall 34a of the first cover 34.

さらに第２バッテリケース３２に収容されるバッテリモジュール４５はバッテリセル４４が車幅方向に積層されているため、第２バッテリケース３２を車幅方向に長い形状にして後部シート１６のシートクッション１６ａとの干渉を回避することができる。このとき第２バッテリケース３２の第２ウオータジャケット４７は冷却水が車幅方向に流れるように配置されるので、バッテリモジュール４５の全てのバッテリセル４４を効率的に冷却することが可能となる。 Further, in the battery module 45 housed in the second battery case 32, since the battery cells 44 are laminated in the vehicle width direction, the second battery case 32 is formed into a long shape in the vehicle width direction and is combined with the seat cushion 16a of the rear seat 16. Interference can be avoided. At this time, since the second water jacket 47 of the second battery case 32 is arranged so that the cooling water flows in the vehicle width direction, it is possible to efficiently cool all the battery cells 44 of the battery module 45.

次に、図８に基づいて本発明の第２の実施の形態を説明する。 Next, a second embodiment of the present invention will be described with reference to FIG.

第２の実施の形態Second embodiment

第１の実施の形態では、第１ケース本体３３の内部に４個のバッテリモジュール３７が長手方向を前後方向に向けて配置されているが、第２の実施の形態では、第１ケース本体３３の内部の前側に２個のバッテリモジュール３７が長手方向を車幅方向に向けて配置され、さらに第１ケース本体３３の内部の後側に４個のバッテリモジュール３７が長手方向を前後方向に向けて配置されている。これら６個のバッテリモジュール３７は第１ケース本体３３の車幅方向中央部に前後方向に沿って形成された凹部３３ａの車幅方向両側に３個ずつ振り分けて配置されており、凹部３３ａの上方のバッテリモジュール３７が配置されていない空間を利用して、ジャンクションボード３９、バッテリ制御装置４０、低圧コネクタ５０および高圧コネクタ５１が配置される。 In the first embodiment, four battery modules 37 are arranged inside the first case main body 33 with the longitudinal direction facing the front-back direction, but in the second embodiment, the first case main body 33 Two battery modules 37 are arranged on the front side inside the case with the longitudinal direction facing the vehicle width direction, and four battery modules 37 are arranged on the rear side inside the first case main body 33 with the longitudinal direction facing the front-rear direction. Are arranged. These six battery modules 37 are arranged in the central portion of the first case main body 33 in the vehicle width direction by distributing three of them on both sides of the recess 33a formed along the vehicle width direction in the front-rear direction, and above the recess 33a. The junction board 39, the battery control device 40, the low-voltage connector 50, and the high-voltage connector 51 are arranged by utilizing the space in which the battery module 37 of the above is not arranged.

すなわち、凹部３３ａの上方の後側には、下側のジャンクションボード３９と上側のバッテリ制御装置４０とが上下２段に配置される。さらに凹部３３ａの上方の前側には、低圧コネクタ５０の本体部５０ａが配置され、低圧コネクタ５０のインターフェース部５０ｂが第１ケース本体３３の凹部３３ａの上方の前壁３３ｈに取り付けられる。また高圧コネクタ５１はインターフェース部５１ａからなり、そのインターフェース部５１ａも第１ケース本体３３の凹部３３ａの上方の前壁３３ｈにおける低圧コネクタ５０のインターフェース部５０ｂの左側に取り付けられる。 That is, on the rear side above the recess 33a, the lower junction board 39 and the upper battery control device 40 are arranged in two upper and lower stages. Further, the main body portion 50a of the low-voltage connector 50 is arranged on the front side above the recess 33a, and the interface portion 50b of the low-voltage connector 50 is attached to the front wall 33h above the recess 33a of the first case main body 33. Further, the high-voltage connector 51 is composed of an interface portion 51a, and the interface portion 51a is also attached to the left side of the interface portion 50b of the low-voltage connector 50 on the front wall 33h above the recess 33a of the first case main body 33.

ジャンクションボード３９、低圧コネクタ５０の本体部５０ａおよび高圧コネクタ５１がバスバー５２～５５で接続されており、低圧コネクタ５０のインターフェース部５０ｂは各補機類に低圧電流を供給し、高圧コネクタ５１のインターフェース部５１ａは電動モータ１１に高圧電流を供給する。 The junction board 39, the main body 50a of the low-voltage connector 50, and the high-voltage connector 51 are connected by bus bars 52 to 55, and the interface portion 50b of the low-voltage connector 50 supplies low-voltage current to each accessory, and the interface of the high-voltage connector 51. The unit 51a supplies a high voltage current to the electric motor 11.

第１ケース本体３３の凹部３３ａに沿う形状の遮熱板５６が前壁３３ｈから前方に延びており、この遮熱板５６が凹部３３ａの下方に配置された排気管１８との間に介在することで、排気管１８の熱から低圧コネクタ５０のインターフェース部５０ｂおよび高圧コネクタ５１のインターフェース部５１ａを保護している。 A heat shield plate 56 having a shape along the recess 33a of the first case main body 33 extends forward from the front wall 33h, and the heat shield plate 56 is interposed between the heat shield plate 56 and the exhaust pipe 18 arranged below the recess 33a. This protects the interface portion 50b of the low-voltage connector 50 and the interface portion 51a of the high-voltage connector 51 from the heat of the exhaust pipe 18.

以上のように、第２の実施の形態によれば、第１の実施の形態の作用効果に加えて、低圧コネクタ５０および高圧コネクタ５１のインターフェース部５０ｂ，５１ａは第１バッテリケース３１の前壁３３ｈであって、第１ケース本体３３の凹部３３ａの上方に配置されるので、第１バッテリケース３１の前方に配置された電気機器に対する配線の取り回しを無駄なく行うことができる。しかも低圧コネクタ５０の本体部５０ａは凹部３３ａの上方に配置されるので、バッテリモジュール３７が配置されない凹部３３ａの上方のデッドスペースを有効利用して低圧コネクタ５０の本体部５０ａを合理的に配置することができる。さらに低圧コネクタ５０および高圧コネクタ５１のインターフェース部５０ｂ，５１ａは第１バッテリケース３１の前壁３３ｈに配置され、低圧コネクタ５０の本体部５０ａは凹部３３ａの上方に配置されるジャンクションボード３９の前方に配置され、ジャンクションボード３９と本体部５０ａとは電気的に接続されるので、ジャンクションボード３９および低圧コネクタ５０の本体部５０ａを接続するバスバー５２，５３の長さを短く抑えることができる。 As described above, according to the second embodiment, in addition to the effects of the first embodiment, the interface portions 50b and 51a of the low voltage connector 50 and the high voltage connector 51 are the front walls of the first battery case 31. Since it is 33h and is arranged above the recess 33a of the first case main body 33, it is possible to route the wiring to the electric device arranged in front of the first battery case 31 without waste. Moreover, since the main body 50a of the low-voltage connector 50 is arranged above the recess 33a, the main body 50a of the low-voltage connector 50 is rationally arranged by effectively utilizing the dead space above the recess 33a where the battery module 37 is not arranged. be able to. Further, the low-voltage connector 50 and the interface portions 50b and 51a of the high-voltage connector 51 are arranged on the front wall 33h of the first battery case 31, and the main body portion 50a of the low-voltage connector 50 is located in front of the junction board 39 arranged above the recess 33a. Since the junction board 39 and the main body 50a are electrically connected to each other, the lengths of the bus bars 52 and 53 connecting the junction board 39 and the main body 50a of the low voltage connector 50 can be shortened.

以上、本発明の実施の形態を説明したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。 Although the embodiments of the present invention have been described above, the present invention can make various design changes without departing from the gist thereof.

例えば、本発明の排気通路部材は実施の形態のマフラー１９に限定されず、そのマフラー１９の上流側あるいは下流側の排気管１８であっても良い。 For example, the exhaust passage member of the present invention is not limited to the muffler 19 of the embodiment, and may be an exhaust pipe 18 on the upstream side or the downstream side of the muffler 19.

また実施の形態では第１バッテリケース３１の第１ケース本体３３および第２バッテリケース３２の第２カバー４３が共に梁部３４ｆ，４３ｄを備えているが、それらの梁部３４ｆ，４３ｄのうちの少なくとも一方だけを備えていても良い。 Further, in the embodiment, the first case main body 33 of the first battery case 31 and the second cover 43 of the second battery case 32 both have beam portions 34f and 43d, but among those beam portions 34f and 43d. It may have at least one.

また実施の形態では第１バッテリケース３１の後部における凹部３３ａの上方空間にバッテリ制御装置４０およびジャンクションボード３９の両方を配置しているが、それらのバッテリ制御装置４０およびジャンクションボード３９のうちの少なくとも一方だけを配置しても良い。 Further, in the embodiment, both the battery control device 40 and the junction board 39 are arranged in the space above the recess 33a in the rear portion of the first battery case 31, but at least one of the battery control device 40 and the junction board 39 is arranged. Only one may be placed.

また実施の形態では低圧コネクタ５０および高圧コネクタ５１のインターフェース部５０ｂ，５１ａを第１ケース本体３３の前壁３３ｈに設けているが、それを第１ケース本体３３の後壁に設けても良い。 Further, in the embodiment, the low-voltage connector 50 and the interface portions 50b and 51a of the high-voltage connector 51 are provided on the front wall 33h of the first case main body 33, but they may be provided on the rear wall of the first case main body 33.

また本発明の冷媒は実施の形態の冷却水に限定されるものではない。 Further, the refrigerant of the present invention is not limited to the cooling water of the embodiment.

Claims (10)

電動モータ（１１）と、エンジン（１２）と、前記電動モータ（１１）を駆動するバッテリモジュール（３７，４５）を収容してフロアパネル（１４）の下面に配置されたバッテリケース（３１，３２）と、前記エンジン（１２）から後方に延びる排気通路部材（１９）と、前記フロアパネル（１４）の上面に配置された前部シート（１５）および後部シート（１６）とを備える電動車両であって、
前記バッテリケース（３１，３２）は、各々が別個のバッテリモジュール（３７，４５）を収容するように独立して形成された第１バッテリケース（３１）と第２バッテリケース（３２）とからなり、前記第２バッテリケース（３２）は前記第１バッテリケース（３１）よりも小型であって該第１バッテリケース（３１）の前上部に載置され、前記第２バッテリケース（３２）は前記後部シート（１６）のシートクッション（１６ａ）の前部下方に配置され、前記第１バッテリケース（３１）のケース上壁（３４ａ）と前記第２バッテリケース（３２）のケース下壁（４２ａ）との間には、前記第２バッテリケース（３２）を該第２バッテリケース（３２）の外方から冷却する冷媒ジャケット（４７）が形成され、前記第１バッテリケース（３１）の車幅方向中央部の下面には前後方向に延びて前記排気通路部材（１９）の少なくとも一部が通過する凹部（３３ａ）が形成され、前記第１バッテリケース（３１）に収容される前記バッテリモジュール（３７）は前記凹部（３３ａ）の左右両側に配置され、前記第２バッテリケース（３２）に収容される前記バッテリモジュール（４５）は長手方向を車幅方向に向けて配置されることを特徴とする電動車両。A battery case (31, 32) that houses the electric motor (11), the engine (12), and the battery module (37, 45) that drives the electric motor (11) and is arranged on the lower surface of the floor panel (14). ), An exhaust passage member (19) extending rearward from the engine (12), and an electric vehicle including a front seat (15) and a rear seat (16) arranged on the upper surface of the floor panel (14). There,
The battery cases (31, 32) are composed of a first battery case (31) and a second battery case (32), each of which is independently formed to accommodate a separate battery module (37, 45). The second battery case (32) is smaller than the first battery case (31) and is mounted on the front upper portion of the first battery case (31), and the second battery case (32) is the same. The case upper wall (34a) of the first battery case (31) and the case lower wall (42a) of the second battery case (32) are arranged below the front part of the seat cushion (16a) of the rear seat (16). A refrigerant jacket (47) for cooling the second battery case (32) from the outside of the second battery case (32) is formed between the two, and the width direction of the first battery case (31). A recess (33a) extending in the front-rear direction and passing at least a part of the exhaust passage member (19) is formed on the lower surface of the central portion, and the battery module (37) accommodated in the first battery case (31). ) Is arranged on the left and right sides of the recess (33a), and the battery module (45) housed in the second battery case (32) is arranged with the longitudinal direction facing the vehicle width direction. Electric vehicle. バッテリ制御装置（４０）およびジャンクションボード（３９）の少なくとも一方を前記第１バッテリケース（３１）の後部における前記凹部（３３ａ）の上方空間に配置し、セル電圧センサ（４１）を前記第１バッテリケース（３１）の後部における前記バッテリモジュール（３７）の上方空間に配置したことを特徴とする、請求項１に記載の電動車両。 At least one of the battery control device (40) and the junction board (39) is arranged in the space above the recess (33a) in the rear part of the first battery case (31), and the cell voltage sensor (41) is placed in the first battery. The electric vehicle according to claim 1, wherein the electric vehicle is arranged in a space above the battery module (37) at the rear of the case (31). 前記第１バッテリケース（３１）の後部上面の車幅方向中央部の高さは、前記第２バッテリケース（３２）の上面の高さよりも低いことを特徴とする、請求項２に記載の電動車両。 The electric motor according to claim 2, wherein the height of the central portion of the rear upper surface of the first battery case (31) in the vehicle width direction is lower than the height of the upper surface of the second battery case (32). vehicle. （削除）(delete) 前記冷媒ジャケット（４７）は、前記第１バッテリケース（３１）のケース上壁（３４ａ）下面と前記第２バッテリケース（３２）のケース下壁（４２ａ）上面とにより区画されることを特徴とする、請求項１～請求項３の何れか１項に記載の電動車両。 The refrigerant jacket (47) is characterized by being partitioned by a lower surface of the case upper wall (34a) of the first battery case (31) and an upper surface of the case lower wall (42a) of the second battery case (32). The electric vehicle according to any one of claims 1 to 3. 前記第２バッテリケース（３２）のケース後壁（４３ｃ）は前上方から後下方に向かって傾斜しており、前記第２バッテリケース（３２）の前部に配置した前記バッテリモジュール（４５）の後面と前記ケース後壁（４３ｃ）の前面との間に区画される空間に配線類（４９）を配置したことを特徴とする、請求項１～請求項３，請求項５の何れか１項に記載の電動車両。 The case rear wall (43c) of the second battery case (32) is inclined from the front upper part to the rear lower part, and the battery module (45) arranged in the front portion of the second battery case (32). Any one of claims 1 to 3 and 5, wherein the wiring (49) is arranged in a space partitioned between the rear surface and the front surface of the case rear wall (43c). The electric vehicle described in. 前記第１バッテリケース（３１）の上部および前記第２バッテリケース（３２）の後部の少なくとも一方は車幅方向に延びる梁部（３４ｆ，４３ｄ）を備えることを特徴とする、請求項１～請求項３，請求項５，請求項６の何れか１項に記載の電動車両。 Claims 1 to 1, wherein at least one of the upper portion of the first battery case (31) and the rear portion of the second battery case (32) includes a beam portion (34f, 43d) extending in the vehicle width direction. Item 3. The electric vehicle according to any one of claims 5 and 6. 前記第１バッテリケース（３１）は前記バッテリモジュール（３７，４５）と前記電動車両の電気機器とを電気的に接続するコネクタ（５０，５１）を備え、前記コネクタ（５０，５１）は本体部（５０ａ）とインターフェース部（５０ｂ，５１ａ）とを備え、前記インターフェース部（５０ｂ，５１ａ）は前記第１バッテリケース（３１）の前壁（３３ｈ）あるいは後壁であって、かつ車体前後方向に見て前記凹部（３３ａ）の上方に配置されることを特徴とする、請求項１～請求項３，請求項５～請求項７の何れか１項に記載の電動車両。 The first battery case (31) includes a connector (50, 51) for electrically connecting the battery module (37, 45) and the electric device of the electric vehicle, and the connector (50, 51) has a main body. (50a) and an interface unit (50b, 51a) are provided, and the interface unit (50b, 51a) is a front wall (33h) or a rear wall of the first battery case (31) and is in the front-rear direction of the vehicle body. The electric vehicle according to any one of claims 1 to 3, and 5 to 7, wherein the electric vehicle is arranged above the recess (33a). 前記本体部（５０ａ）は上面視で前記凹部（３３ａ）の上方に配置されることを特徴とする、請求項８に記載の電動車両。 The electric vehicle according to claim 8, wherein the main body portion (50a) is arranged above the concave portion (33a) in a top view. 前記インターフェース部（５０ａ，５１）は前記第１バッテリケース（３１）の前壁（３３ｈ）に配置され、前記本体部（５０ａ）は前記凹部（３３ａ）の上方に配置されるジャンクションボード（３９）の前方に配置され、前記ジャンクションボード（３９）と前記本体部（５０ａ）とは電気的に接続されることを特徴とする、請求項９に記載の電動車両。 The interface portion (50a, 51) is arranged on the front wall (33h) of the first battery case (31), and the main body portion (50a) is arranged above the recess (33a) in the junction board (39). The electric vehicle according to claim 9, wherein the junction board (39) and the main body portion (50a) are electrically connected to each other.
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